Drum winder and nip guard therefor



"P 1967 E. J. KLACZKIEWICZ 3,342,433

DRUM WINDER AND NIP GUARD THEREFOR Filed May 20, 1966 2 Sheets-Sheet 1 INVENTOR. fzezzgzcz A TTO; NE Y8 p 1967 E. J. KLACZKIEWICZ 3,342,433

DRUM WINDER AND NIP GUARD THEREFOR Filed May '20, 1966 2 Sheets-Sheet 2 M4MM, WM, @144 "I III! I ll III I II I IIM I I l United States Patent 3,342,433 DRUM WINDER AND NIP GUARD THEREFQR Edward J. Klaczkiewicz, Wilmington, Del., assigner to Beloit Eastern Corporation, Downington, Pm, a corporation of Delaware Filed May 20, 1966, Ser. No. 551,579 9 Claims. (Cl. 242-66) This invention relates to improvements in drum winders for winding webs of paper and the like and more particularly relates to an improved nip guard guarding the nip between the winding rolls and the roll of paper being wound thereon.

A principal object of the invention is to provide an improved form of nip guard arranged with a view toward utmost simplicity in construction and efliciency in operation.

Another object of the invention is to provide a simplified and improved form of nipguard adapted for rolls of paper of various diameters without adjusting the guard.

A further object of the present invention is to provide an improved form of drum winder in which the nip between the winding rolls and the roll of paper being wound thereon is guarded during the entire winding operation and the guard serves to prevent the roll of paper from being rolled from the winder, in cases where a center shaft for the roll is not used.

Still a further object of the invention is to improve upon the nip guard heretofore in use by so constructing and arranging the guard to perform its guarding function without adjustment during the entire winding operation, and to be readily moved away from the wound roll of paper at the termination of a winding operation.

A still further object of the invention is to provide a simplified and improved form of nip guard for drum winders of a compact construction having a simplified form of means for raising and lowering the guard, and equalizing guide means for the guard guiding the guard for movement in a plurality of parallel planes during raising and lowering movement thereof.

These and other objects of the invention will appear from time to time as the following specification proceeds and with reference to the accompanying drawings wherein:

FIGURE 1 is an end view of a nip guard constructed in accordance with the principles of the present invention, showing the winder in phantom;

FIGURE 2 is a fragmentary view in side elevation of the nipguard shown in FIGURE 1, with the winder shown in phantom; and 7 FIGURE 3 is a fragmentary detail enlarged horizontal sectional view taken substantially along line III III of FIGURE 2.

In the embodiment of the invention illustrated in the drawings, I have shown in FIGURES 1 and 2 a drum winder 10 including a base 11 and parallel spaced posts 12,12 extending upwardly of said base. The base 11 carries bearing supports (not shown) for rotatably supporthorizontally aligned winder rolls dispensed with in certain other winding operations.

is diagrammatically shown as riding 15, to maintain a predetermined pressure nip between the roll of paper and the winder rolls 13, 13 and to exert a predetermined force on the roll of paper as it is being wound, which force decreases as the roll of paper builds up on the winder shaft and is released as the roll of paper is built up to a predetermined diameter. The rider roll 16 may be of a conventional form, and is no part of the present invention so need not here in be shown or described further.

The winding nips between the rolls 13-, 13 and the roll of paper 15 are shown as being protected by a nip guard 17 on the ingoing sides of the winding nips. The nip guard 17 is vertically movable along laterally spaced guides 19, 19 suitably mounted on the outer sides of the posts 12, 12 for adjustable movement therealong.

The nip guard 17 is shown as being in the form of a paneled rectangular frame having longitudinally extending top and bottom frame members 20, 20 connected together by end frame members 21, 21. The frame members 20 and 21 may be formed from rectangular metal tubing and may be welded or otherwise secured together at their adjacent ends. Intermediate spaced horizontally extending rectangular tubes or frame members 22, 22 are connected between the insides of the side frame members 2.1, 21 in a suitable manner. Vertical frame members 23, 23, which may also be made from rectangular metal tubing are provided to divide the spaces between the frame members 20, 20 and 22, 22 into a series of rectangular mounting openings for panels 24, 24. The vertical members 23, 23 may also be made from rectangular tubing and may be welded or otherwise secured between the frame members 2.0 and 22 and 22, 22 in any suitable manner, to rigidify the panel structure. The panels 24, 24 may be made from flattened expanded metal and may be suitably mounted in position in the openings defined by said vertical and horizontal frame members, to complete the guard structure.

The end frame members 21, 21 are shown in FIGURE 3 as having guide plates 25 extending along the insides thereof and outwardly therefrom and Welded or otherwise secured thereto. The guide plates 25 extend along the insides of the guides 19. Guide tongues or gibs 26 are welded or otherwise secured to the ends of the end frame members 21 intermediate the sides thereof and extend along the outsides of the guides 19 in spaced relation with respect thereto, to guide the nip guard 17 for vertical movement along the guides 19. The guides 19 are shown in FIGURE 3 as being in the form of angle irons having legs 27 extending perpendicular to the guides 19 and suitably secured to the posts 12, 12 and extending vertically therealong. The legs 27 of the guides 19 form supports for brackets 29 and 30 at the respective upper and lower ends thereof, forming mountings for opposite ends of cylinders 31. The cylinders 31 may be the cylinders'of commercial forms of cylinders, known by the trade name TOL-O- MATIC cable cylinders. Each cylinder 31 may have a piston 32 movable therealong and having flexible cables 33 suitably connected to opposite ends thereof and extending along and through opposite ends of the cylinder 31. The cable 33 of one cylinder, connected to the upper end of the piston 32, extends upwardly along the cylinder 31 to and around a direction changing sheave 35 and downwardly and outwardly therefrom to the top flange of a channel 36, and is anchored thereto by an anchor 37. The channel 36 is welded or otherwise secured to a side frame member 21 and extends inwardly therefrom. The cable 33 leading downwardly along the cylinder 31 turns about a direction changing sheave 39 and upwardly therefrom to the lower flange of the channel 36 and is anchored thereto as by an anchor 40. The cables 33, 33 are suitably sealed to opposite ends of the cylinder 31. Thus, as fluid under pressure is admitted to either end of the cylinder 31, the nip guard 17 may be raised or lowered and may be held in position in its lower guarding position shown in FIGURE 1, or in an elevated position shown by broken lines in FIGURE 2, free from the roll of paper 15, to accommodate removal 3 of the roll of paper from the winding rolls, 13, 13 along a ramp 41, between the posts 12, 12.

A means is provided to equalize the nip guard 17 during vertical movement thereof and guide the nip guard and prevent binding thereof, which is herein shown as comprising a pair of equalizing cables 43, 43 secured at their upper ends to the upper end portions of the posts 12, 12.

Each equalizing cable 43 is connected at its upper end, with a turnbuckle 44 through a connector 45. The turn buckle 44 is mounted on the associated post 12 on a bolt (not shown) or other suitable mounting means. The turnbuckle 44 and equalizing cable 43 extend horizontally along the inside of an associated post 13 to and around a cable bracket 46, suitably mounted on the outside of the post 12, and extending inwardly therefrom into alignment with the nip guard 17. From the cable bracket 46 the cable 43 extends parallel to the guide 19 downwardly and under a guide sheave 47 rotatably mounted on a corner bracket 48.

The corner bracket 48 may be in the form of a plate forming'a support for the sheave 47 and mounted on the inner side of the nip guard 17 at the lower corner of an upper panel formed by an end frame member 21, and a longitudinal intermediate frame member 22.

From the sheave 4-7 the guide cable 43 extends angularly downwardly across the nip guard 17 over a direction changing sheave 49, mounted on a bracket plate 50 mounted on the inside lower corner of the nip guard 17 on the inside thereof. From the pulley 49 the cable 43 extends downwardly to a bracket 51 to which it is anchored thereto. The bracket 51 is suitably mounted on the outside of the post 12 and forms a stationary anchor for the lower end of the equalizing cable 43, aligning said cable with the upper guide 46.

The opposite cable 43 extends downwardly from the associated cable bracket 46 along the inside of the opposite post 12 in alignment with the cable 43 connected to the aligned bracket 51, to and around the direction changing idler 47, and diagonally across the nip guard 17 over a lower left hand corner direction changing idler 49 to the anchoring bracket 51 to which it is secured.

The equalizing cables 43, 43 thus extend diagonally across the inside of the nip guard 17 in opposite directions and are anchored at their upper and lower ends to opposite posts 12. The cables 43, 43 may be maintained at the proper tension by the turnbuckles 44, 44 to equalize travel of the nip guard 17 and insure that the nip guard travels in a plurality of parallel planes for the full extent of travel thereof, to maintain the nip guard in position in all positions thereof and to avoid binding of the nip guard with the guides 19, 19.

In the operation of Winding a roll of paper, the nip guard 17 is placed in its lowermost position shown in FIGURE 1 and is held in this position by fluid under pressure in the cylinders 31, 31. In this position of the nip guard the nips between the rolls 13, 13 and the roll of paper 15, are fully protected during the entire winding operation, and where the roll of paper may not be wound on a center shaft, as is many times the case, the nip guard will prevent the roll from rolling from the rotating winding rolls 13, 13 and along the ramp 41, until intentionally removed from said winding rolls.

At the termination of a roll winding operation, the nip guard may be raised to its extreme elevated position shown by broken lines in FIGURE 2 to allow the fully wound roll to be discharged from the winder along the ramp 41 for wrapping or for other operations, to be performed thereon.

It may be seen from the foregoing that a simple and improved form of guard has been provided for guarding the nips between a roll of paper and its winding rolls, which continually guards the nips without adjustment as the size of the roll of paper increases, and which also serves to retain the roll to the winder in cases where the roll is wound Without a center shaft.

It may also be seen that the nip guard is readily adjustable and is guided for free movement into a plurality of vertical planes without binding, and thus may readily be moved to its uppermost discharge position or its lowermost guarding position with a minimum of effort.

While I have herein shown and described one form in which the invention may be attained, it should be understood that various modifications and variations in the invention may be effected with-out departing from the spirit and scope of the novel concepts thereof.

1 claim as my invention:

1. In a drum winder for winding webs of paper and the like into rolls,

a winder frame including a pair of parallel spaced posts spaced from opposite ends of the roll of paper,

a pair of horizontal winder rolls rotatably mounted in said frame and extending in the space between said posts and rotatably driven by power to support and wind a roll of paper thereon,

and means guarding the nip between said winder rolls and the roll of paper thereon and retaining the roll of paper to said winder rolls during the winding operation comprising:

a nip guard extending across said frame in alignment with the nip between said winder rolls and the roll of paper thereon and vertically movable to clear a wound roll of paper and accommodate the wound roll to be discharged for further treatment.

2. The structure of claim 1,

wherein fluid pressure operated means are provided to elevate and lower the nip guard and hold the nip guard in a selected position.

3. The structure of claim 1,

wherein the nip guard is generally rectangular in form,

wherein vertical channelled guides are provided for opposite ends of said guard,

and wherein flexible equalizing guides are provided and extend along opposite sides of the frame of the winder and retain the nip guard for parallel vertical movement along said guides with respect to said frame for the full length of travel thereof.

4. The structure of claim 3,

wherein the flexible equalizing guides are anchored to said frame at their upper ends and extend downwardly along said frame and are guided to extend diagonally across the nip guard in opposite directions, and are anchored at their lower ends at the opposite sides of the frame from which the upper ends of said equalizing guides are anchored.

5. The structure of claim 3,

wherein the nip guard is provided with four sheaves,

each being adjacent a corner thereof,

wherein anchoring means are provided for said equaliz ing flexible guiding devices at the upper ends thereof,

and wherein each equalizing flexible guiding device extends downwardly along the frame about an aligned upper sheave and diagonally downwardly from the aligned upper sheaves partially around a lower sheave, and downwardly therefrom in alignment with the upper run of the opposite flexible equalizing guide, and secured to said frame, to form an equalizing guide for the nip guard, maintaining the nip guard for parallel movement vertically for the full extent of movement thereof.

6. The structure of claim 3,

wherein fluid pressure operated cylinder and piston means and flexible draft devices connected therewith are provided for vertically moving said nip guard and holding said nip guard in position.

7. The structure of claim 1,

wherein the nip guard is on the incoming side of the winder and winder rolls and is spaced from the center of the roll of paper a distance greater than the maximum diameter of the roll,

wherein vertical guides are slidably interengaged by said nip guard,

and wherein flexible draft devices and cylinder and piston means are mounted on said frame for vertically moving said nip guard along said guides.

8. The drum winder of claim 7,

wherein the nip guard is generally rectangular in form,

and wherein flexible equalizing guides are provided and extend along opposite sides of said frame and diagonally across said nip guard and cooperate with said vertical guides for retaining said nip guard for movement along said frames in a plurality of parallel planes for the full length of travel of said nip guard.

9. The structure of claim 8,

wherein the nip guard is provided with a sheave adjacent each corner thereof,

wherein anchoring means are provided for said flexible equalizing devices at the upper ends of said frame,

and wherein each flexible equalizing guiding device extends downwardly along one side of said frame about an aligned upper sheave and diagonally from said aligned upper sheave diagonally across the nip guard partially around a lower sheave and downwardly therefrom in alignment with the upper run of the next adjacent flexible guiding device, and secured to the opposite side of said frame at its lower end, whereby the flexible equalizing devices form equalizing guides, maintaining the nip guard in parallel relation with respect to said guides for the full extent of vertical travel thereof.

References Cited UNITED STATES PATENTS 1,730,552 10/ 1929 Aldrich 242-66 2,619,298 11/1952 Aulen 242-66 3,167,268 1/1965 Birch et a1. 242-56 LEONARD D. CHRISTIAN, Primary Examiner. 20 

1. IN A DRUM WINDER FOR WINDING WEBS OF PAPER AND THE LIKE INTO ROLLS, A WINDER FRAME INCLUDING A PAIR OF PARALLEL SPACED POSTS SPACED FROM OPPOSITE ENDS OF THE ROLL OF PAPER, A PAIR OF HORIZONTAL WINDER ROLLS ROTATABLY MOUNTED IN SAID FRAME AND EXTENDING IN THE SPACE BETWEEN SAID POSTS AND ROTATABLY DRIVEN BY POWER TO SUPPORT AND WIND A ROLL OF PAPER THEREON, AND MEANS GUARDING THE NIP BETWEEN SAID WINDER ROLLS AND THE ROLL OF PAPER THEREON AND RETAINING THE ROLL OF PAPER TO SAID WINDER ROLLS DURING THE WINDING OPERATION COMPRISING: A NIP GUARD EXTENDING ACROSS SAID FRAME IN ALIGNMENT WITH THE NIP BETWEEN SAID WINDER ROLLS AND THE ROLL OF PAPER THEREON AND VERTICALLY MOVABLE TO CLEAR A WOUND ROLL OF PAPER AND ACCOMMODATE THE WOUND ROLL TO BE DISCHARGED FOR FURTHER TREATMENT. 